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Mathematics, 16.09.2021 07:50 30valgolden

AB←→ contains the points A(2,1) and B(3,4). CD←→ contains the points C(−2,−1) and D(1,−2).
Is AB←→ perpendicular to CD←→? Why or why not?

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AB←→ contains the points A(2,1) and B(3,4). CD←→ contains the points C(−2,−1) and D(1,−2).
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